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Service bulletins for the 2020 Subaru WRX

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

307 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
18-220-222022-05-03. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
15-192-22R2022-04-05. Service bulletin. ELECTRICAL SYSTEM. This bulletin has been developed to outline the steps for gathering basic essential information during diagnosis and repair of the Infotainment concerns. (Applicable to all models with Harman or Denso CP1 Infotainment).
01-175-162022-03-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides helpful tips to better utilize the Subaru Select Monitor 4.
15-255-19R2022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM. Map Data Update Procedure for Harman Gen 3.1 Navigation equipped Head Units (H/U).
02-189-222022-02-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SUMP/TANK:DRAIN PLUG; EQUIPMENT. This Bulletin announces design changes to the engine oil and CVT fluid drain plugs.
15-249-19R2022-02-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
05-88-212022-01-04. Service bulletin. SUSPENSION. This bulletin announces a design change made to the front stabilizer bushings.
15-255-19R2022-01-04. Service bulletin. ELECTRICAL SYSTEM. Map Data Update Procedure for Harman Gen 3.1 Navigation Equipped Head Units.
15-236-18R2022-01-04. Service bulletin. ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
16-102-16R2021-11-02. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin provides a new flow chart and additional diagnostic tools to assist technicians with troubleshooting DTC P0841- SECONDARY OIL PRESSURE SENSOR PERFORMANCE.
05-79-20R2021-10-04. Service bulletin. WHEELS. This bulletin announces a change made to the wheel lug nuts.
15-195-16R2021-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides important information regarding diagnosis and replacement (when applicable) of the STARLINK Telematics Data Communication Module (DCM) along with a new claim submission requirement.
15-236-18R2021-10-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
07-200-212021-10-04. Service bulletin. WHEELS; ELECTRICAL SYSTEM:HORN; STRUCTURE. This bulletin announces the design changes to the right front wheel apron.
09-74-21R2021-09-04. Service bulletin. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; FUEL SYSTEM, GASOLINE. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
12-203-16R2021-09-03. Service bulletin. SEAT BELTS; SEATS. This bulletin provides a procedure to address customer concerns of a squeaking sound originating from where the front seat belt buckle assembly attaches to the seat frame.
15-236-18R2021-08-05. Service bulletin. ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units.
18-212-212021-08-05. Service bulletin. EQUIPMENT. The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
15-236-18R2021-07-03. Service bulletin. ELECTRICAL SYSTEM. The following information addresses reprogramming file availability and a software update installation procedure to provide optimization to the new Harman Gen 3.1 Audio and Navigation head units utilized in the models as listed.
09-74-21R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components (e.g. intake valves and / or manifold, and combustion chambers).
16-131-20R2021-07-03. Service bulletin. POWER TRAIN. This bulletin provides corrected diagnostics containing a revised flow for certain CVT solenoid related DTCs.
01-167-08R2021-07-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models
09-51-08R2021-07-03. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This bulletin is to advise of SOA’s revised catalytic converter recycling program shipping procedure.
07-196-212021-07-03. Service bulletin. ELECTRICAL SYSTEM. This bulletin announces availability of a new reprograming file for the telematics system.
02-187-212021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. This bulletin outlines changes in the service procedure for engine oil pressure inspection.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.